R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000582 R14: 00000000004c8177 R15: 0000000000000000
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8512 Comm: kworker/u4:9 Not tainted 4.19.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Bluetooth: Can't allocate mem for new packet
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:skb_put+0x2d/0x1c0 net/core/skbuff.c:1697
Code: 56 41 55 41 54 41 89 f4 55 48 89 fd 4c 8d ad c8 00 00 00 53 e8 64 1d d1 fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 42
RSP: 0018:ffff88804b147b70 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880a486b000 RCX: ffffffff851be544
RDX: 0000000000000019 RSI: ffffffff8596873c RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88804afbe340 R09: ffffed1015ce4733
R10: ffffed1015ce4732 R11: ffff8880ae723993 R12: 0000000000000001
R13: 00000000000000c8 R14: ffff8880a486b0f8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000052cda000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 skb_put_data include/linux/skbuff.h:2111 [inline]
 bcsp_unslip_one_byte drivers/bluetooth/hci_bcsp.c:451 [inline]
 bcsp_recv+0x9f9/0x1420 drivers/bluetooth/hci_bcsp.c:613
 hci_uart_tty_receive+0x21d/0x520 drivers/bluetooth/hci_ldisc.c:620
 tty_ldisc_receive_buf+0x14a/0x190 drivers/tty/tty_buffer.c:460
 tty_port_default_receive_buf+0x78/0xa0 drivers/tty/tty_port.c:38
 receive_buf drivers/tty/tty_buffer.c:476 [inline]
 flush_to_ldisc+0x21d/0x390 drivers/tty/tty_buffer.c:528
 process_one_work+0x91f/0x1640 kernel/workqueue.c:2155
 worker_thread+0x96/0xe20 kernel/workqueue.c:2298
 kthread+0x34a/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace ac396b7f5fdc52ed ]---
RIP: 0010:skb_put+0x2d/0x1c0 net/core/skbuff.c:1697
Code: 56 41 55 41 54 41 89 f4 55 48 89 fd 4c 8d ad c8 00 00 00 53 e8 64 1d d1 fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 42
RSP: 0018:ffff88804b147b70 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880a486b000 RCX: ffffffff851be544
RDX: 0000000000000019 RSI: ffffffff8596873c RDI: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
RBP: 0000000000000000 R08: ffff88804afbe340 R09: ffffed1015ce4733
R10: ffffed1015ce4732 R11: ffff8880ae723993 R12: 0000000000000001
R13: 00000000000000c8 R14: ffff8880a486b0f8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CPU: 0 PID: 1309 Comm: syz-executor.1 Tainted: G      D           4.19.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold+0xa/0x1b lib/fault-inject.c:149
 __should_failslab+0x115/0x180 mm/failslab.c:32
 should_failslab+0x5/0xf mm/slab_common.c:1558
 slab_pre_alloc_hook mm/slab.h:424 [inline]
 slab_alloc mm/slab.c:3383 [inline]
 kmem_cache_alloc+0x44/0x710 mm/slab.c:3557
 mempool_alloc+0x148/0x340 mm/mempool.c:385
 bio_alloc_bioset+0x398/0x610 block/bio.c:489
 bio_alloc include/linux/bio.h:437 [inline]
 submit_bh_wbc+0x141/0x760 fs/buffer.c:3069
CR2: 00000000018ab9b8 CR3: 0000000097c9a000 CR4: 00000000001426e0
 submit_bh fs/buffer.c:3101 [inline]
 __sync_dirty_buffer+0x105/0x2e0 fs/buffer.c:3187
 __ext4_handle_dirty_metadata+0x232/0x580 fs/ext4/ext4_jbd2.c:300
 ext4_handle_dirty_dirent_node+0x37d/0x490 fs/ext4/namei.c:402
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 ext4_delete_entry+0x34b/0x480 fs/ext4/namei.c:2399
 ext4_unlink fs/ext4/namei.c:3071 [inline]
 ext4_unlink+0x55c/0x1050 fs/ext4/namei.c:3026
 vfs_unlink+0x2cc/0x4f0 fs/namei.c:4002